Water-penny beetles are a family (the Psephenidae) of 273 species (in 35 genera) of aquatic beetles found on all continents except Antarctica, in both tropical and temperate areas. [2] The …

Jan 31, 2025 · An adult Water Penny looks like many types of beetle: six legs, black body, shiny, and small. Its larval stage looks quite unlike most beetle larvae. Instead of a worm-like, white …

Water penny larvae cling to the undersides or sides of rocks and other submerged objects in flowing, unpolluted water. Sometimes they cling to stones at the waterline, where splashing …

Aug 29, 2023 · The water penny is a beetle in the Order Coleoptera and the family Psephenidae. The name “water penny” comes from the unique appearance of their larval form, which …

Nov 10, 2009 · Water pennies are the larvae of riffle beetles in the family Psephenidae (the first “P” is kind of silent, and “ph” = “f”). Water pennies live underwater on rocks in rapid …

This small family of beetles gets its common name ("water pennies") from the unusual shape of the larvae, which have widely expanded dorsal plates that give the animals a flat round shape, …

Sep 3, 2019 · Water pennies are not nearly as thick as a penny, and this flatness allows for their survival in a fairly hostile environment. Water pennies are found on rocks in flowing water. But …

Jan 9, 2025 · Larvae on the underside of rocks of submerged wood in fast-flowing water. Adults on rocks and vegetation along streams.

Water-penny beetles are a family (the Psephenidae) of 272 species (in 35 genera) of aquatic beetles found on all continents, in both tropical and temperate areas. The young, which live in …

Water-penny beetles are a family (Psephenidae) of aquatic beetles. The young, which live in water, resemble pennies. The larvae feed off of algae, larvae, and feces. The presence of …